<script setup lang="ts">
import { reactive,ref } from 'vue'

import { onLoad } from '@dcloudio/uni-app'

import {SubType,getHomeRecommend,GoodsItem} from '@/apis/home'


interface metaType {
  title: string
  coverPath: string
  tabs: string[]
}

const metaMap = reactive<{ [key: string]: metaType }>({
  1: {
    title: '特惠推荐',
    coverPath:
      'https://pcapi-xiaotuxian-front-devtest.itheima.net/miniapp/uploads/recommend_1.jpg',
    tabs: ['价格', '折扣', '筛选'],
  },
  2: {
    title: '爆款推荐',
    coverPath:
      'https://pcapi-xiaotuxian-front-devtest.itheima.net/miniapp/uploads/recommend_2.jpg',
    tabs: ['24小时热搜', '热销总榜', '人气周榜'],
  },
  3: {
    title: '一站买全',
    coverPath:
      'https://pcapi-xiaotuxian-front-devtest.itheima.net/miniapp/uploads/recommend_3.jpg',
    tabs: ['搞定熊孩子', '家里不凌乱', '让音质更出众'],
  },
  5: {
    title: '新鲜好物',
    coverPath:
      'https://pcapi-xiaotuxian-front-devtest.itheima.net/miniapp/uploads/recommend_4.jpg',
    tabs: ['抢先尝新', '新品预告'],
  },
})

let type = $ref('1')
let meta = $ref(metaMap[type])

onLoad(({ type }) => {
  if (type) meta = metaMap[type]
})

// 动态更新导航栏标题
uni.setNavigationBarTitle({
  title: meta.title,
})


// 广告图
const bannerPicture = ref('')
type SubTypesAndGoods = SubType & GoodsItem 
const subTypes = ref<SubTypesAndGoods[]>([])
// 统一管理推荐请求
const urlMap = [
  { type: '1', title: '特惠推荐', url: '/home/preference/mutli' },
  { type: '2', title: '爆款推荐', url: '/home/inVogue/mutli' },
  { type: '3', title: '一站买全', url: '/home/oneStop/mutli' },
  { type: '4', title: '领券中心', url: '/home/new/mutli' }, // 后端未提供，暂用新鲜好物url
  { type: '5', title: '新鲜好物', url: '/home/new/mutli' },
]

let currUrl = ''

onLoad(async ({type})=>{
  const currUrlMap = urlMap.find(item=> item.type === type)
  if(currUrlMap){
    currUrl = currUrlMap.url
    const res = await getHomeRecommend(currUrlMap.url,{})
    uni.setNavigationBarTitle({
      title:res.title
    })
    bannerPicture.value = res.bannerPicture
    // subTypes.value = res.subTypes

    res.subTypes.forEach(item=>{
      const obj = {
        ...item,
        ...res.goodsItems[Number(item.id)]
      }
      subTypes.value.push(obj)
    })

  }
})


// 高亮的下标
const activeIndex = ref(0)

const changeTabs = (index:number) =>{
   activeIndex.value = index
}

const onScrolltolower = async () =>{
 const currSubTypes = subTypes.value[activeIndex.value]
 
 if(currSubTypes.counts === currSubTypes.items.length){
   return uni.showToast({icon:'none',title:'没有更多了'})
 }

 currSubTypes.page++
 const res = await getHomeRecommend(currUrl,{
  pageSize:10,
  page:currSubTypes.page,
  subType:currSubTypes.id
 })

 currSubTypes.items.push(...res.goodsItems[Number(currSubTypes.id)].items)
}



</script>

<template>
  <view class="viewport">
    <!-- 推荐封面图 -->
    <view class="cover">
      <image :src="bannerPicture"></image>
    </view>
    <view class="tabs">
      <text
        class="text"
        v-for="(item, index) in subTypes"
        :key="item.id"
        :class="{ active: index === activeIndex }"
        @tap="changeTabs(index)"
        >{{ item.title }}</text
      >
    </view>
    <scroll-view  @scrolltolower="onScrolltolower"
 v-for="(item,index) in subTypes" :key="item.id" scroll-y enhanced :show-scrollbar="false" v-show="activeIndex ===index
    " class="scroll-view">
      <view class="goods">
        <navigator
          hover-class="none"
          :url="`/pages/goods/index?id=${item.id}`"
          class="navigator"
          v-for="goods in item.items"
          :key="goods.id"
        >
          <image
            class="thumb"
            :src="goods.picture"
          ></image>
          <view class="name ellipsis">{{ goods.name }}</view>
          <view class="price">
            <text class="symbol">¥</text>
            <text class="number">{{ goods.price }}</text>
            <text class="decimal">.00</text>
          </view>
        </navigator>
      </view>
      <view class="loading">正在加载...</view>
    </scroll-view>
  </view>
</template>

<style>
page {
  height: 100%;
  background-color: #f4f4f4;
}

.viewport {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 180rpx 0 0;
  position: relative;
}

.cover {
  width: 750rpx;
  height: 225rpx;
  border-radius: 0 0 40rpx 40rpx;
  overflow: hidden;

  position: absolute;
  left: 0;
  top: 0;
}

.tabs {
  display: flex;
  justify-content: space-evenly;
  height: 100rpx;
  line-height: 90rpx;
  margin: 0 20rpx;
  font-size: 28rpx;
  border-radius: 10rpx;
  box-shadow: 0 4rpx 5rpx rgba(200, 200, 200, 0.3);
  color: #333;
  background-color: #fff;
  position: relative;
  z-index: 9;
}

.tabs .text {
  margin: 0 20rpx;
  position: relative;
}

.tabs .active::after {
  content: '';
  width: 40rpx;
  height: 4rpx;
  transform: translate(-50%);
  background-color: #27ba9b;
  position: absolute;
  left: 50%;
  bottom: 24rpx;
}

.scroll-view {
  flex: 1;
}

.goods {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  padding: 0 20rpx 20rpx;
}

.goods .navigator {
  width: 345rpx;
  padding: 20rpx;
  margin-top: 20rpx;
  border-radius: 10rpx;
  background-color: #fff;
}

.goods .thumb {
  width: 305rpx;
  height: 305rpx;
}

.goods .name {
  height: 88rpx;
  font-size: 26rpx;
}

.goods .price {
  line-height: 1;
  color: #cf4444;
  font-size: 30rpx;
}

.goods .symbol,
.goods .decimal {
  font-size: 70%;
}
</style>
